Improvement in adding-machines



G. LiNDEROS.

Adding Machines.

N0, 140,146, P.at'ented.lune24,18.73.

WITNESSES INVEN TOR z him@ Mam Uivrrnn STATES.`

PATENT GFFIGE.

v IMPROVEMENT lN ADDING-MACHINES.

Specification forming part of Letters Patent No.

140,146, dated Jiinefi, 1873; application filed August '11, 1871.

To all ywhom it may concern:

Be it known thatLGUs'rAvUs LiNDEiioos, of Point Arena, iii the county of Mendocino, State of California, have invented a new and useful Improvement in Adding-Machines, the nature of which improvement is fully set forth in the following specication, reference being had to the accompanying drauin gs, in which- Figure l is a top view of the machine, showing the face-plate with the lgures thereon and the indexes. Fig. 2 shows the machine with the back plate removed, disclosing the internal structure .ind arrangement of the machinery.

The saniefletters in both the figures refer to identical parts..

The object of this invention is not simply to facilitate the addingv of abstract numbers, although by it any numbers the sum of which is equalto or less than one hundred thousand maybe readily obtained Without the use of paper or pencil, and with perfect accuracy. The main purpose is to afford Weighers, measurers, and persons having to keep tally Where a continuous succession of small numbers is to he added-and where it is at the saine time necessary that there should be no omission, or

mistake, or loss through tbrgetfulness, by interruptioii or otherwise, ot' the sum obtained at any point--a simple, cheap, pocket instru nient not liable to get out of order, and aiiording an easy and certain means of keeping the sumof the unity, whether of weight or ineasure, atany time accumulated. The especial use and advantage may lbe illustrated by the measuring of boards-and other lumber, whlre an exact account of the number of feet is kept when the lumbgr is shipped. The person keeping the tallyJ notes the number of feet in each plank as it passes, and, by the ordinary methods of paper and pencil, or by mere' ineinoryof items, there is always liability of mistake. But, in' order that those skilled in the art to which my invention appertaiiis, may be able to make and use the same, I will proceed'to explain the manner in which I have constructed and arranged the details of my invention. v

I make a face and bottom plate of the shape shown in the drawings, or in any other which may be dictated by convenience or fancy: The

vface-plate has a circular opening of suitable size, from one side of which an arm, marked at in the drawings, serves as a base or starting-point, to which the zero-figure oii the disk is brought, and also ai'oi'ds a support for the pivot-screw which holds the revolving disk. This revolving disk, whichyI have marked b in the drawing, is divided by short radial lines, and by holes or by the holes alone, (or sinali radial grooves may be used instead,) into one hundred (100) equal spaces, and marked with the corresponding figures. In theformshown,only the ves and tens are marked, but the number may be increased or diminished in frequency at pleasure. The holes serve to mark the units, and also to vreceive the point which turns thedisk. The edge of the revolving disk extends slightlys underneath the faceplate, and the rour of holes iii the disk is near to inner edge of this plate. On the upper surface of this inner edge, as is vclearly shown, are radial lines and numbers corresponding exactly to those described on the disk. l Further, on the revolving disk, located at a convenient point for the purpose ot' 4striking on the right-hand side of one of the cogs on the small pinion d, where the zero is brought down to the upper edge ofthe arm on the face-plate, is 'a iinger,\ c, ot' convenient form and length, adapted to morel or pass the cog, as will be more fully described hereafter. This cog-wheel d, as shown on the right-hand side above the (lisk, is provided with teii cogs. `It carries attached thereto a small cireulardisk, f, revolving on theoutside of the face-plate, and marked with numbers from one to ten, as shown. On the right-hand side is fixed to the face-plate a small index, g, the point of whiclifrests near 4the edge et" the disk f. On the small 'pinion` dis fixed an arm, h, like that heretofore described on the large iievolvingdisk, and for a similar purpose. This arm isso arranged that whenthe zero or ten point on the small disk Iis under the index the arm h shall just touch or rest nea-r the under side of one of the cogs `of a` pinion, k,- aiid when the disk revolves, bringing the numbers'hp past the index, the arm travels around and'again impin ges against the upper side of the same cog, and just before disk din its revolution has brought the zero-l point again around to the index the arm 7L has turned the second pinion koneteuth of the entire revolution. This second pinion being also provided with a disk marked and numbered like the irst, and having an index similar to g, it will ne evident that one revolution of d will move l; in such a manner as to carry the index from. Zero to one.

0n the left of It is another disk with the same construction and arrangement of pinion and index, as the second is moved oy the rst. Llhis third disk, however, is numheredfrom ten to one hundred hy tens. Other pinions, with numbers similarly arranged, constructed to he moved in thc same Way, and carrying an index similar to the last, may be used, it' dcsircd.

In my machine I have provided a spring underneath the large disk to keep it steady and pressed up to the lace-plate.

The operation of my machine is as follows: To adjust the machine, move the igure 8 on the small disk to the right, to the index, (this is done to avoid any mistake in adjusting the other small disks in the manner underneath described.) Move the tigure 9 on the middle small disk to its index, Move the figure 90 on the small disk to the left, to the index. Having set the several small disks as above directed, turn the large disk by placing the pointed bar in the holes on the disk until the small disk to the right moves to zero, but care must he taken that the zero on the large disk is in ay line with the-corresponding zero on the face-plate at t-he arm, when all the corresponding tigurcs on the large disk will coincide with those on thc face-plate, and the machine will he ready for operation, during which the figures on the large revolving disk is not regarded, but only those on the face-plate, inasmuch as the ljgures on the large revolving disk are only used to find the final result ot' the operation, and then only the ligure opposite zero at the arm attached to the face-plate is the proper tig-nre to be added.

To use ther machine, place the pointed bar in the hole on the large revolving disk corresponding to the figure on the racc-plate desired to be added, and turn the'disk down to the arm. Remove the pointed bar and place it in the hole on the large revolving` disk corresponding to another tigure desired to he added to the former, and so on, from figure to figure until the end. It must be borne in mind that the large revolving` disk only numbers from l to 100, consequently only units and tens can be used at one time, but hundreds, as Well as thousands, can he used in the same manner, always remembering that hundred or thousand, Whichever used, must be implied. As for the other three small disks, they Will regulate themselves Without further attention, the.

one to the right pointing out one hundred to thousand, the one in the middle from one thousand to ten thousands, and the one to the eft from ten thousands to one hundred thou` sands, be the same dollars, cents, pounds, ounces, or feet, inches, Ste.

it will he observed, from the foregoing description of construction, that when the large disk has made one revolution, the arm thereon will strike, if moved further, a cog, the

right-hand pinion moving its disk from zero to one, thereby carrying the sum to one hundred; thiswillindicate that one hundred is to be added to the sum aiready indicated on the large disk. When the small right-hand disk has made one revolution, having marked at each step an additional hundred to thc tens and units on the large disk, it will have reached one thousand, or its limit. Whenthe right-hand disk new passes the one-thousand point, its iinger on the pinion will strike and move the middle pinion one space, bringing the figure l on its disk under the index, and marking thus a record of one thousand, while the first small disk goes on marking hundreds, and the large units and tens. The third operates in the same, and marks tens of thou sands.

Lo find the resulniirst look at the small disk on the left-hand side; it will give the tens of thousands if any one reached at its index. Second, the small disk in the middle points out at its index the thousands, if any. Third, the small disk on the right 'th hundreds, it' any. Fourth, the large revolving disk at the arm gives the number from one to one hundred, all oi' which must be added together; as, for instance, if the small disk in the left-hand side points out 90, the small middle disk 5, the small disk on the right hand side 2, and the large disk 40, the whole sum Would then he equal to 90,()00 {5,000+ 2004-40, equal to ninetfiive thousand tivo hundred and forty.

I am aware that the main elements shown by me are old, and I make no claim to them.

I have simply aimed to make such a new com' hination as would afford a compact, cheap, and durable machine.

What claim as new, and desire to secure by Letters Patent, is-

The device shown, consisting of the, main and secondary wheels and disks, marked as shown and provided with arms, when inclosed between the plates, the upper having the openings, and the bar a and the wheels being held adjustably in place bythe spring, the

whole constructed and arranged as described.

GUSTAVUS LINDEROOS. Signed in presence of`- CHARLES LYMAN, M. GAY. 

